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Finding the Fourth Proportional to 580,015.90, 813,888.50 and 580,015.90

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Solution

The fourth proportional to 580,015.90, 813,888.50 and 580,015.90 is: 813,888.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,015.90 : 813,888.50 = 580,015.90 : x
  2. Step 2: Convert to fraction form
    580,015.90/813,888.50 = 580,015.90/x
  3. Step 3: Cross multiply
    580,015.90x = 813,888.50 × 580,015.90
  4. Step 4: Simplify right side
    580,015.90x = 472,068,270,827.15
  5. Step 5: Solve for x
    x = 472,068,270,827.15/580,015.90
  6. Step 6: Final answer
    x = 813,888.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.